A grid of six-by-three smiley faces renders as React components, each face composed of SVG circles and an arc path. The code reassembles a face from reusable components—BackgroundCircle, Eye, Mouth, and Glisten—inside a FaceContainer that translates the SVG group. Each instance receives randomized eye radius, mouth width, and mouth radius via d3.range and Math.random, while d3.arc generates the mouth path. The example demonstrates composable SVG primitives within React, using d3.v6 for arc generation without any external data source.